Unable to set default filters via configuration properties about spring-cloud-gateway HOT 3 CLOSED

spring:
  cloud:
    gateway:
      default-filters:
      - name: AddResponseHeader
        args:
          name: X-Response-Default-Foo
          value: Default-Bar

@EnableGateway
@SpringBootApplication
public class SampleApplication {

    public static void main(String[] args) {
        SpringApplication.run(SampleApplication.class, args);
    }

    @Bean
    public RouteLocator routes() {
        return Routes.locator()
                .route("the-service")
                .uri("http://httpbin.org:80")
                .predicate(x -> true)
                .and()
                .build();
    }

}

public class ShutdownWebFilterFactory implements WebFilterFactory {

    @Override
    public WebFilter apply(Tuple args) {
        return (exchange, chain) -> {
            System.out.println("in filter, shutting down");
            System.exit(1);
            throw new RuntimeException();
        };

    }
}

spring:
  cloud:
    gateway:
      defaultFilters:
       - name: Shutdown